Self-interference has been a serious problem in passive RFID systems. We propose a new solution using nonlinear transmission lines (NLTLs) for efficient second and third harmonic generation. Three designs for different frequency bands, in discrete and distributed lines, are implemented in IBM 8RF 0.13μm CMOS process. The NLTL with Bragg cutoff frequency of 10 GHz shows −10 dBm second harmonic and −15 dBm third harmonic power by 0 dBm small signal input with a layout area of 0.4 mm by 1.8 mm. This demonstrates the advantages of compact size and passive operation of NLTL in RFID transponder applications.
WE4A: RFID and Power Harvesting Technologies
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.